.container {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  font-size: .34rem;
}

header {
  width: 100%;
  height: 1rem;
  background: red;
  color: #fff;
}

main {
  flex: 1;
  overflow: hidden;
}

footer {
  width: 100%;
  height: 1rem;
  background: green;
  color: #fff;
  display: flex;
  justify-content: space-around;
  align-items: center;
}
